Stoneforge Mystic does that with equipment, preferably those that have mechanics like living weapon or for Mirrodin!, which are put into your hand and later onto the battlefield
In a game where just one turn can make all the difference in a match, its no surprise that Time Walk was given a place among the Power Nine and ultimately added to the Reserved List
(It attacks each combat if able and attacks a player other than you if able.) When enchanted creature dies, return this card to the battlefield at the beginning of the next end step
BOING, Fox Mim on the board to send Merlin back to hand for another point of lore, and to Rush any opposing cards
We knew it was the kind of mechanic that would have a lot of weird corner cases, but after much playtesting, we felt it was something that added a lot to the set and chose to keep it in